A 500-lb box B is suspended from a cable attached to a 40-lb truck A mounted on an I-beam inclined in the form that shows. If at the indicated time the truck accelerates 1.2 ft / s2 up and to the right, determine (a) the acceleration of B in relation to A and b) the tension in the CD cable.

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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.